Empty space
Encyclopedia
Empty space may refer to:
  • Outer space
    Outer space
    Outer space is the void that exists between celestial bodies, including the Earth. It is not completely empty, but consists of a hard vacuum containing a low density of particles: predominantly a plasma of hydrogen and helium, as well as electromagnetic radiation, magnetic fields, and neutrinos....

    , especially the relatively empty regions of the universe outside the atmospheres of celestial bodies
  • Vacuum
    Vacuum
    In everyday usage, vacuum is a volume of space that is essentially empty of matter, such that its gaseous pressure is much less than atmospheric pressure. The word comes from the Latin term for "empty". A perfect vacuum would be one with no particles in it at all, which is impossible to achieve in...

    , a volume of space that is essentially empty of matter, such that its gaseous pressure is much less than atmospheric pressure
  • Free space, a perfect vacuum as expressed in the classical physics model
  • Vacuum state
    Vacuum state
    In quantum field theory, the vacuum state is the quantum state with the lowest possible energy. Generally, it contains no physical particles...

    , a perfect vacuum based on the quantum mechanical model
  • In mathematical physics
    Mathematical physics
    Mathematical physics refers to development of mathematical methods for application to problems in physics. The Journal of Mathematical Physics defines this area as: "the application of mathematics to problems in physics and the development of mathematical methods suitable for such applications and...

    , the homogeneous equation may correspond to a physical theory formulated in empty space
  • "Empty Space", a song by British band Air Traffic
    Air Traffic
    Air Traffic was a British alternative rock band from Bournemouth. Formed in 2003, the band consists of Chris Wall , David Ryan Jordan , Tom Pritchard and Jim Maddock ....

The source of this article is wikipedia, the free encyclopedia.  The text of this article is licensed under the GFDL.
 
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